A miniature world of concrete and stone in Springfield, Ohio.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

A castle built by an eccentric medieval enthusiast in rural Ohio.

What is it about mushrooms that makes people wish they lived inside of them?

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A suspended garden, now gone, once hung in the middle of this abandoned church.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

Inside, ancient treasures. Outside, modern contradictions.

A memorial for an outsider theorist who believed that the planet is actually hollow.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

A European-style bath house in Chicago.

Cemetery featuring rare glass-fronted columbarium.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

At HopCat, a marker honors fictional creatures with the ability to travel the missing dimensions of Kcymaerxthaere.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.